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Meta-Data - ORM

JDO defines XML MetaData in jdo files as well as orm files.
As always with XML, the metadata must match the defined DTD/XSD for that file type.
This section describes the content of the orm files.
The content of jdo files can be found here.
All orm files must contain a valid DTD/DOCTYPE specification. You can use PUBLIC or SYSTEM versions of these.

Here are a couple of examples valid for orm files with DTD specification